---
title: "Initiate SMS verification for a caller ID"
method: POST
path: "/v1/CallerIds/SmsVerifications"
tags: ["V1CallerIds"]
---

# Initiate SMS verification for a caller ID

`POST /v1/CallerIds/SmsVerifications`

## Response `201`

SMS verification initiated

- NumbersV1SmsVerification
  - `to` string — The phone number being verified in E.164 format.
  - `verificationSid` string — The unique SID of this verification resource.
  - `sendCodeAttempts` object[] — An array of verification attempt objects.
    - `attemptSid` string
    - `time` string

---

[API](https://skmtc.net/twilio/apis/twilio-numbers.md) · [All operations](https://skmtc.net/twilio/apis/twilio-numbers/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/twilio/twilio-numbers/revisions/089dd6360dfe/schema)